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Published in: Clinical Oral Investigations 1/2024

01-01-2024 | Laser | Research

The prophylactic effect of photobiomodulation therapy on pain perception due to infiltration injection: a randomized clinical trial

Authors: Shakiba Zandi, Hamid Sarlak, Malihe Safari, Ehsan Momeni

Published in: Clinical Oral Investigations | Issue 1/2024

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Abstract

Objectives

Fear of pain in dentistry especially the injection involved in most of the processes has always been an important issue preventing the patients from consulting a dentist at the right time. This study aims to evaluate the effect of photobiomodulation therapy on reduction of pain in infiltration injection.

Materials and methods

This trial is a crossover study including 30 patients. The patients are divided into two groups (laser therapy in the first period and placebo effect in the next period or vice versa with split-mouth design) using the covariate adaptive randomization method. All the patients received bilateral maxillary canine anesthesia in two periods performed with an ICT injection device (amount of anesthesia solution loaded: 1.8 mL) at a speed of 1 mL/min and a temperature of the solution of 37 °C. In each period, patients received either a prophylactic dose of 940-nm laser (500 mW, 10 J/cm2) or its placebo effect before the injection. The degree of pain perception after each sort of treatment is evaluated by both SEM (Sound, Eye, Motor, and Pain) and VAS (Visual Analogue Scale) scales.

Results

According to analysis, all the patients scored a VAS scale under 3 in the period they received intervention. Also considering the SEM scale, most of the patients scored 0 in the intervention period. No adverse effect was reported during or after the process.

Conclusions

The study showed a significant effect of photobiomodulation on reducing pain perception during infiltration injection.

Clinical relevance

This method can be useful in order to lower the pain for the patients consulting a dentist and therefore facilitate consulting at early stages of the dental issues.

Trial registration

The registration number (date) of the clinical trial in a Primary Registry in the WHO Registry Network is IR.ARAKMU.REC.1398.248(13/03/2020). The related URL is https://​en.​irct.​ir/​trial/​45362.
Appendix
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Metadata
Title
The prophylactic effect of photobiomodulation therapy on pain perception due to infiltration injection: a randomized clinical trial
Authors
Shakiba Zandi
Hamid Sarlak
Malihe Safari
Ehsan Momeni
Publication date
01-01-2024
Publisher
Springer Berlin Heidelberg
Keyword
Laser
Published in
Clinical Oral Investigations / Issue 1/2024
Print ISSN: 1432-6981
Electronic ISSN: 1436-3771
DOI
https://doi.org/10.1007/s00784-023-05394-4

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